Md. Code Ann., Fam. Law § 10-348
A party or support enforcement agency seeking to modify, or to modify and enforce, a child support order issued in another state shall register that order in this State in the same manner provided in §§ 10-340 through 10-347 of this subtitle if the order has not been registered. A complaint for modification may be filed at the same time as a request for registration, or later. The pleading must specify the grounds for modification.
Added as Family Law § 10-339 by Acts 1996, c. 667, § 2, eff. Jan. 1, 1997. Renumbered as Family Law § 10-348 by Acts 1997, c. 609, § 1, eff. July 1, 1997. Amended by Acts 2015, c. 308, § 2, eff. July 1, 2015.